Research peptide guides
Understand the compounds. Know what to check. Clear guides to buying research materials, reading test reports and verifying a batch.
About this library
These guides explain how research peptides are analysed, what a certificate of analysis records, how to verify a vial against its lot number, how materials are stored and handled in the laboratory, and how the UK research-use-only supply category works. Written for researchers evaluating an order, with practical information on documentation, chemistry and supplier checks. All materials are supplied for laboratory research only, not for human or animal use.
Guides
- Bacteriostatic water: 3ml and 10ml
Compare 3ml and 10ml bacteriostatic water research vials, current prices, dispatch notices and documentation. UK supply for laboratory research only. - BPC-157 vs TB-500
A factual side-by-side of BPC-157 and TB-500 — origin, chemistry, CAS numbers, the research literature around each, and how both are documented. Research use only. - Melanotan-1 vs Melanotan-2
A factual comparison of Melanotan-1 (afamelanotide) and Melanotan-2 — structure, CAS numbers, melanocortin-receptor research context and regulatory status. Research use only. - How to read a Certificate of Analysis (COA)
What every field on a research-peptide certificate of analysis means — HPLC purity, LC-MS identity, expected vs detected mass, batch ID and method — and how to spot a weak COA. - How research peptides are tested (HPLC & MS)
A plain-English explanation of how research peptides are tested for purity (RP-HPLC) and identity (LC-MS), what each method measures, and why both are needed. - Peptide storage & handling guide
How lyophilised research peptides are stored and handled in the laboratory — temperature, desiccation, light protection and why solution stability differs from powder stability. - Research peptides & UK law
A factual overview of how research-use-only peptides sit within UK law — medicines regulation, the research-use boundary, and WADA status. Not legal advice. - Choosing a UK research peptide supplier
A practical checklist for evaluating UK research-peptide suppliers — batch-level COAs, independent testing, identity confirmation, transparency, UK dispatch and clear research-use boundaries. - How to verify a research peptide batch
Enter the lot number from your vial and see its COA, HPLC purity and LC-MS identity result in seconds. What a real batch record shows — and the red flags to watch for. - COA-verified peptides UK
COA-verified peptides in the UK: what a certificate of analysis should show — per-batch HPLC purity, LC-MS identity and lot-number verification you can check yourself. - Bulk research peptides UK
Ordering research peptides in larger quantities in the UK: the same per-batch COA and lot-number verification regardless of order size, with tiered basket discounts and UK dispatch. - HPLC tested peptides UK
What HPLC testing means for research peptides — how reversed-phase HPLC measures purity, what the chromatogram shows, red flags, and how every batch is documented. - Peptide batch testing
What peptide batch testing means, what a batch report should contain (HPLC purity, LC-MS identity, lot number), and how to check a vial against a published report. - Peptide purity explained
Peptide purity explained — HPLC purity vs net peptide content vs counterion (acetate/TFA) content, common impurities, and how to read a COA's purity figure. - BPC-157 buying guide
Buying BPC-157 in the UK: what to check before you order — batch-level COA, HPLC purity, LC-MS identity, the CAS number and UK dispatch. Research use only. - TB-500 buying guide
Buying TB-500 in the UK: what a certificate of analysis should list — batch number, HPLC purity, identity confirmation and test date. Research use only. - GHK-Cu buying guide
Compare GHK-Cu research vials in the UK. Check copper peptide identity, vial quantity and the batch COA before ordering. Laboratory research only. - NAD+ buying guide
Buying NAD+ in the UK: check the assay, HPLC-verified purity and a public COA. CAS, molecular weight, formats and pricing. Research use only. - Research Peptides UK
Buying research peptides in the UK in 60 seconds: research-use-only, a public COA per batch, and a supplier who publishes the batch number. Research use only. - Peptide Blends UK
Buying research peptide blends in the UK: the certificate must identify each peptide and report purity for each, on the same record as the lot. Research use only. - Buy PT-141 UK
Buying PT-141 in the UK: what to check before you order — batch-level COA, HPLC purity, LC-MS identity, the CAS number and UK dispatch. Research use only. - Buy KPV UK
Buying KPV in the UK: what to check before you order — the CAS number, sequence, batch-level COA and identity confirmation. Research use only. - Buy Glutathione UK
Buying reduced L-glutathione in the UK for research: what to check before you order — the form (GSH), the CAS number and batch documentation. Research use only. - Buy GHRP-2 UK
Buying GHRP-2 in the UK: what to check before you order — batch-level COA, HPLC purity, LC-MS identity, the CAS number and UK dispatch. Research use only. - Buy GHRP-6 UK
Buying GHRP-6 in the UK: what to check before you order — CAS number, batch-level COA, HPLC purity and LC-MS identity confirmation. Research use only. - Buy Tesamorelin UK
Buying tesamorelin in the UK: what to check before you order — batch-level COA, HPLC purity, LC-MS identity on a large peptide, CAS number and UK dispatch. Research use only. - Buy Ipamorelin UK
Buying ipamorelin in the UK: what to check before you order — CAS number, batch-level COA, HPLC purity and LC-MS identity confirmation. Research use only. - Buy MOTS-c UK
Buying MOTS-c in the UK: what to check before you order — batch-level COA, HPLC purity, LC-MS identity, CAS number and UK dispatch. Research use only. - Buy L-Carnitine UK
Buying L-carnitine in the UK for research: what to check before you order — the CAS number, stated concentration and batch documentation. Research use only. - Buy CJC-1295 UK
Buying CJC-1295 in the UK: DAC versus the ipamorelin blend, what each batch COA must show, and the CAS numbers that confirm the compound. Research use only. - Peptide Reconstitution Guide
How lyophilised research peptides are supplied and reconstituted: the mechanics of dissolving a powder, solvent formats and storage after reconstitution. Research use only. - Ipamorelin vs GHRP-2
A factual side-by-side of ipamorelin and GHRP-2 — structure, CAS numbers, molecular weight, research literature context and regulatory status. Research use only. - GHRP-6 vs GHRP-2
A factual side-by-side of GHRP-6 and GHRP-2 - structure, CAS numbers, molecular weight, research literature context and regulatory status. Research use only. - Tesamorelin vs Ipamorelin
A factual side-by-side of tesamorelin and ipamorelin — structure, CAS numbers, molecular weight, research literature context and regulatory status. Research use only. - BPC-157 vs GHK-Cu
A factual side-by-side of BPC-157 and GHK-Cu — origin, structure, CAS numbers, molecular weight, research literature context and regulatory status. Research use only.
Documentation library
Deeper single-topic reference articles on reading and checking analytical documentation — the fields on a certificate of analysis, what an HPLC purity figure does and does not record, how LC-MS identity confirmation works, and how lot numbers tie a vial to its batch record. New articles are added regularly.
- What Is a Certificate of Analysis (COA) for a Research Peptide?
What a Certificate of Analysis (COA) is for a research peptide: the fields, the test methods, and what each line records. Documentation reference, RUO only. - Anatomy of a Research-Peptide Certificate of Analysis: Every Section Explained
A structural walkthrough of a research-peptide Certificate of Analysis: the header, identity, methods, results and sign-off blocks, section by section. RUO only. - Lot Number vs Batch Number: Reading Traceability on Research-Peptide Documentation
Lot number vs batch number on research-peptide documentation: what each field means, how lot-to-label matching works, and how to read traceability. UK guide. - LC-MS Identity Confirmation Explained: Expected vs Detected Mass
LC-MS identity confirmation explained: expected vs detected mass, molecular weight, and why purity is not identity on a peptide COA. RUO only. - What 99% HPLC Purity Actually Means on a Research-Peptide COA
What 99% HPLC purity on a research-peptide COA actually means: area %, method-relative, and what it does and does not establish. Documentation only, RUO. - Area Percent vs Weight Percent in HPLC Purity: Why the Method Matters
Area percent vs weight percent in HPLC purity: what each figure measures on a research-peptide COA and why the named method matters. Documentation only, RUO. - How to Request and Read a Batch-Specific COA by Lot Number
A documentation and logistics guide to requesting a batch-specific certificate of analysis (COA) by lot number and confirming the lot-to-label match before dispatch. - How to Spot a Mismatched or Unreliable COA
Documentation checks for spotting a mismatched or unreliable peptide COA: lot-to-label, dates, named method and issuing lab. Research-use-only reference. - How Research-Peptide Batch Traceability Works: From Order to Lot Number to COA
How research-peptide batch traceability works: from order and SKU to the lot number on the vial and the matching COA. A documentation and logistics guide, RUO only. - How Batch-to-Batch Consistency Is Documented for Research Peptides
How batch-to-batch consistency is documented for research peptides: per-lot COAs, HPLC and LC-MS records, and a batch library you can cross-check. RUO only. - Third-Party Peptide Testing Labs and What Independent Verification Means
What independent peptide testing labs do, how supplier COA differs from independent verification, and how live batch verification works. A documentation guide. - Named Third-Party Peptide Testing: What Independent Verification Looks Like
What a named third-party peptide test means, how to tell if a lab is genuinely independent, and the documentation that makes verification checkable. RUO only. - What "Lab Tested" Actually Means on a Research-Peptide Listing
What 'lab tested' actually means on a research-peptide listing, what it does not prove, and the documentation fields to verify before you rely on it. RUO only. - High Purity, Wrong Compound: Co-Elution and Why Identity Is a Separate Test
How a peptide can read high HPLC purity yet be the wrong compound: co-elution explained, and why LC-MS identity closes the gap. Documentation only, RUO. - HPLC Peak Shape: Reading Tailing, Fronting and Shoulder Peaks
How peak shape on an HPLC chromatogram is read: tailing, fronting and shoulder peaks, asymmetry/tailing factor, and what they mean for an area-percent figure. RUO. - Signal-to-Noise, Baseline and Limit of Detection on a Chromatogram
Signal-to-noise, baseline and limit of detection on a chromatogram: what each term measures when reading a peptide purity result. Documentation only, RUO. - How to Read a Mass Spectrum for Peptide Identity
How to read a peptide mass spectrum: m/z axis, the molecular ion, isotope pattern, and expected vs detected mass on a COA. Documentation only, RUO. - Peptide Molecular Weight and Molecular Formula Explained
How peptide molecular weight and molecular formula are calculated, the difference between average and monoisotopic mass, and where they appear on a COA. RUO only. - Counterion and Net Peptide Content (Salt Form) on a Peptide COA, Explained
What counterion and net peptide content (salt form) mean on a peptide COA: TFA vs acetate, gross mass vs net peptide, water and residual solvents. RUO only. - Water Content and Residual Solvents on a Peptide Certificate of Analysis
Water content and residual solvents on a research-peptide COA: what each field records, how the figures are measured, and why they sit beside purity. RUO only. - What Is Lyophilisation (Freeze-Drying) for Research Peptides, and What the Label Tells You
What lyophilisation (freeze-drying) means for research peptides, why material is supplied as a dry solid, and what the vial label records. Research use only. - How to Store Lyophilised Research Peptides (Lab Handling)
How to store lyophilised research peptides: follow the label, and note light, temperature and freeze-thaw considerations for handling. Research use only. - Stability and Shelf-Life Documentation for Lyophilised Research Peptides
How stability and shelf-life are documented for lyophilised research peptides: report date, retest date, stability records and lot tracking. Research use only. - Endotoxin and Sterility Testing Documentation for Research Peptides
What endotoxin and sterility test documentation for research peptides covers: LAL method, units, pass/fail reporting, lot match and report date. RUO only. - What 'Research Use Only' Means as a Supply Category in the UK
What the research-use-only (RUO) supply category covers in the UK: labelling fields, batch documentation and verify-before-dispatch logistics. Documentation reference. - How to Evaluate a UK Research Peptide Supplier
A documentation-first checklist for evaluating a UK research peptide supplier: per-batch COAs, lot matching, named methods, dispatch and RUO positioning. - Most Ordered Research Peptides at Index Peptides in 2026
The most ordered research peptides in the Index Peptides catalogue in 2026, with the documentation available for each batch: COA, HPLC purity, LC-MS identity. - UK Domestic Dispatch vs International Shipping for Research Peptides
UK domestic dispatch vs international shipping for research peptides: customs delays, transit time, and lyophilised stability in transit. Documentation reference, RUO. - Heavy Metal Screening (ICP-MS) on a Peptide COA
What ICP-MS heavy metal screening records on a peptide COA: the elements screened, specification vs result, and how the line appears on a certificate. RUO reference. - How a Product Gets Listed at Index Peptides: The Batch Gate
The Index Peptides batch gate: batch number, supplier documentation, HPLC purity, LC-MS identity, storage condition, limitation notes. No batch record, no listing. - Why Purity Percentages Differ Between Labs and Methods
Why the same peptide batch can read 98.4% on one HPLC method and 99.1% on another: column, gradient, wavelength and integration choices. RUO reference. - How to Read a Peptide COA: A Field-by-Field Guide
Learn how to read a peptide Certificate of Analysis: which fields a real COA has, lot/batch matching, test methods, dates and identity. RUO only. - HPLC Purity vs MS Identity: What Each Test Actually Shows
HPLC purity vs MS identity explained: HPLC measures how much, mass spectrometry confirms what it is. Why a peptide COA needs both. RUO only.
Research use only. Not for human or animal consumption.